That's a wrap! Gossip Girl stars Michelle Trachtenberg and Kaylee DeFer don mini-dresses for final day of filming sixth season

They celebrated the end of their CW series on Saturday with a cake fight and emotional tweets.

And Gossip Girl cast-members Michelle Trachtenberg and Kaylee DeFer donned mini-dresses for their final day of filming Gossip Girl on Sunday in Midtown Manhattan.

'Today was the official wrap day of #GossipGirl. Thank you for 2 amazing years. I Love you @GGfansss @GGWriters @gossipgirl #GGfinalseason,' the 26-year-old blonde tweeted to her 11,000 followers.

XOXO: Gossip Girl cast-members Kaylee DeFer and Michelle Trachtenberg donned mini-dresses for the final day of filming Gossip Girl on Sunday in Midtown Manhattan

Kaylee plays con-artist Ivy Dickens who originally pretended to be Charlotte 'Charlie' Rhodes in order to get access to her trust fund on the popular teen soap.

DeFer looked a bit chilly as she waited to shoot a scene in her flirty red mini-dress over patterned pantyhose, a grey leather motorcycle jacket, and black suede wedges.

Meanwhile, the 27-year-old brunette huddled for warmth in her quilted coat before stripping it off to reveal a striped silver disco dress over black pantyhose, a black blazer, and fierce heeled booties.

Brrrr! The 27-year-old brunette huddled for warmth in her quilted coat next to Desmond Harrington, who plays Chuck's manipulative uncle Jack Bass

Farewell Georgina: Michelle later stripped off the coat to reveal a striped silver disco dress over black pantyhose, a black blazer, and fierce heeled booties.

The pale starlet, who plays scheming socialite Georgina Sparks, was joined by a dapper pin-stripe-suited Desmond Harrington, who plays Chuck's manipulative uncle Jack Bass.

The 36-year-old actor, who's dating Amanda Seyfried, is best known for his role as Detective Joseph Quinn on Showtime's Dexter.

'"You can tell Jesus, the bitch is back" ~ Georgina Sparks #ThatsAllSheWrote #Byebye xoxo, Gossip Girl,' Michelle later tweeted to her 230,000 followers.

Last time as Ivy: Kaylee plays con-artist Ivy Dickens who originally pretended to be Charlotte 'Charlie' Rhodes in order to get access to her trust fund on the popular teen soap

Lady in red: The 26-year-old shot her scene in a flirty red mini-dress over patterned pantyhose, a grey leather motorcycle jacket, and black suede wedges

Gossip Girl has documented the love lives and drama of the likes of Blair Waldorf and Serena van der Woodesen since 2007.

Posting a series of emotional snaps on their respective Twitter pages, Blake Lively and Chace Crawford said goodbye to their co-stars and crew with a festive party Saturday.

In one group shot, Leighton Meester - who plays pampered princess Blair - poked her tongue out playfully at the camera while her co-stars smile happily.

Cake fight! The pale starlet, who plays scheming socialite Georgina Sparks, posed with Penn Badgley - sporting a fresh buzz cut - at the wrap party on Saturday

Meanwhile, Blake looked happy and relaxed as she posed with her arms wrapped around Chace and Ed Westwick.

But it wasn't long before the bash appeared to descend into a huge food fight, with the stars smearing a giant cake all over their faces.

Chace happily tucked into some delicious icing, while Penn Badgley - sporting a fresh buzz cut - and Michelle posed for the camera with the tasty treat smudged all over their bodies.

Celebrating: Chace Crawford, literally smeared with icing, happily tucked into the giant cake

According to Us Weekly, the cast also toasted the end of their beloved series with girls-only and boys-only dinners on Saturday before meeting up with fans at the New York Palace Hotel to watch a blooper reel.

However, newlywed Blake - who married Ryan Reynolds last month - did not attend the evening festivities.

Lively's character Blair and her on-screen love interest Dan Humphrey, played by Badgley, appear to have had a happy ending after they were seen filming a wedding scene.

This is the end: The cast toasted the end of their beloved series with girls-only and boys-only dinners on Saturday before meeting up with fans at the New York Palace Hotel to watch a blooper reel

Another couple who finally appear to have given in to their love for each other on the show are Blair and Chuck Bass, played Westwick.

However, it seems as though the on/off couple won't have quick the same happy ending as Serena and Dan.

Leighton and Ed were seen shooting an emotional goodbye kiss at the Republic Airport in Long Island, which ended with Chuck boarding a private jet and Blair getting into a waiting taxi.

Smiles and snuggles: Newlywed Blake - who married Ryan Reynolds last month - did not attend the later evening festivities but happily posed with Chace and Ed Westwick

'It'll be bittersweet. I'm sure we all want to go on to...not bigger things, but different things,' Badgley recently told the mag. 'It will be a complicated feeling of ambivalence.'

Michelle can be seen on the big screen next year in two films - a thriller called The Scribbler based on a graphic novel and Sexy Evil Genius, a sci-fi dramedy starring Seth Green and Anthony Michael Hall.

And Kaylee will appear in two different thrillers out next year - Darkroom and True Love Waits.

The Gossip Girl series finale is scheduled to air December 10.